Runtime verification of include.

include never touches the included module at compile time, so nothing about it can be checked while compiling. verify_all/1 runs those checks at runtime instead, call it from Application.start/2 or from a test:

Maru.Params.verify_all([:my_app])

For every params block of every module of those applications it asserts that every included module is a Maru.Params.Schema, that the block names given to :only / :except exist, and that every name of the included module's reads: is declared before the include at the same level.